RR-W-410 Wire Rope And StrandThis specification covers wire ropes and wire seizing strands see 6.1. This specification does not include all types, classes, constructions, and sizes of wire rope and strand that are commercially available, but it is intended to cover the more common types, classes, constructions, and sizes that are suitable for federal government use.

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RR-W-410G

3.14.3.3.4 Lay.

3.14.3.3.4.1 Inner layer. The 6 inner strands in the ropes shall be of a left lang lay in accordance with 3.4.4.4 laid around a fiber core or a wire strand core.

3.14.3.3.4.2 Outer layer. The 12 strands in the outer layer shall be laid around the first layer in a right regular lay in accordance with 3.4.4.1.

3.14.3.3.5 Dimensions, weight, and strength. Dimensions, weight, and strength requirements shall be in accordance with tables XXXI and XXXII.

3.14.4 Type IV, miscellaneous, class 3, flattened strand. Wire rope grades improved plow steel or extra improved plow steel shall be in accordance with the requirements specified herein.

3.14.4.1 Material. Material shall be carbon steel as specified (see 3.1 and 6.2(z-1)).

3.14.4.1.1 Finish. Wire ropes shall be of bright (uncoated) wires in accordance with 3.3.5.1.

3.14.4.1.2 Cores. Wire ropes of improved plow steel shall have fiber, wire strand, or independent wire rope cores as specified (see 3.2 and 6.2(z-2)). Wire ropes of extra improved plow steel shall have a wire strand or IWRC as specified (see 3.2.2, 3.2.3, and 6.2(z-2)).

3.14.4.1.3 Fabrication. Wire ropes shall be fabricated as specified (see 3.4 and 6.2(z-3)).

3.14.4.1.4 Lay. Lay shall be right lang lay in accordance with 3.4.4.3.

3.14.4.1.5 Dimensions, weight, and strength. Dimensions, weight, and strength requirements shall be in accordance with tables XXXIII, XXXIV, and XXXV.

3.14.4.1.6 Style interchangeability. The following four constructions have the same number of inner and outer wires and are differentiated only by the construction of the triangular shaped center around which the two layers of wire are stranded. All four have similar operating characteristics and may be supplied and used interchangeably

3.14.4.2 Type IV, miscellaneous, class 3, flattened strand, construction 1, 6 by 25 style B (see figure 41 for typical construction). Wire rope grades improved plow steel, extra improved plow steel, and extra extra improved plow steel shall be in accordance with ASTM A1023/A1023M.

3.14.4.2.1 Wire rope shall have 1 core and 6 strands of 1 triangular wire center and 24 wires each, totaling 144 wires and 6 triangular wire centers in the strands.

3.14.4.2.2 Each strand shall have 1 triangular-wire center, 12 round wires in the inner layer, and

12 round wires in the outer layer. Wires in the inner layer shall be of one diameter. Wires in the outer layer shall be of one diameter. Each strand shall be fabricated in two operations.